Exercise 7.2.5: Write the following as tuple-based CHECK constraints about our "battleships" schema: Classes (class, type, country, numGuns, bore, displacement) Ships (name, class, launched) Battles (name, date) Outcomes (ship, battle, result) a) No class of ships may have guns with larger than a 16-inch bore. b) If a class of ships has more than 9 guns, then their bore must be no larger than 14 inches. !c) No ship can be in battle before it is launched.

Exercise 7.2.5: Write the following as tuple-based CHECK constraints about our "battleships" schema: Classes (class, type, country, numGuns, bore, displacement) Ships (name, class, launched) Battles (name, date) Outcomes (ship, battle, result) a) No class of ships may have guns with larger than a 16-inch bore. b) If a class of ships has more than 9 guns, then their bore must be no larger than 14 inches. !c) No ship can be in battle before it is launched.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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